<!DOCTYPE html>
<html>
  <head>
    <title>Demo</title>
    <style>
      * { background: black; margin: auto 0; padding: 0; }
    </style>
  </head>
  <body>
    <canvas width="400" height="400"></canvas>
    <script type="module" src="./basic-ball.js"></script>
  </body>
</html>
